# HALOWERK Nordic Land – Finland Tree Cover Share

> HALOWERK Nordic Land – Finland Tree Cover Share is a paid API for AI agents from nordland.halowerk.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-15).

Returns the share of ESA WorldCover 2021 pixels classified as tree cover for a given coordinate within Finland.

## Facts

- Endpoint: POST https://nordland.halowerk.com/v1/fi-tree-cover-share
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/halowerk-nordic-land-finland-tree-cover-share-7c030a1f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6PRTlxv0bu6Q0wpPp8gZk

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability halowerk-nordic-land-finland-tree-cover-share-7c030a1f -d '<json body>'
```

Example prompt: What fraction of the land around latitude 62.3, longitude 25.7 in Finland is classified as tree cover according to ESA WorldCover 2021?

## When to prefer this

Choose this endpoint when you need point-level ESA WorldCover 2021 tree cover fraction specifically for coordinates within Finland. It is ideal for forestry analysis, environmental baselines, carbon accounting, habitat mapping, or land use assessments requiring satellite-derived tree cover data at a Finnish location. Prefer it over generic land cover APIs when Finland-specific boundary validation and per-call micropayment pricing via x402 are acceptable.

## Known failure modes

- Coordinate outside Finland's Natural Earth boundary — request rejected with validation error, no charge
- Coordinate within European bounding box but outside Finland — rejected before payment
- Malformed or missing latitude/longitude fields — schema validation error
- Latitude or longitude outside the published European coverage range (lat 34–72.5, lon −31.5–40.5) — rejected

## How this service works

Share of ESA WorldCover 2021 pixels classified as tree cover. The coordinate is validated against the Natural Earth boundary for Finland; results outside it are rejected before payment.

## Output

A numeric share (fraction or percentage) of ESA WorldCover 2021 pixels at the given coordinate classified as tree cover, derived from satellite land cover data for Finland. Coordinates outside Finland's Natural Earth boundary are rejected before any payment is charged.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "latitude": {
   "type": "number",
   "maximum": 72.5,
   "minimum": 34,
   "description": "WGS84 latitude inside the published European coverage."
  },
  "longitude": {
   "type": "number",
   "maximum": 40.5,
   "minimum": -31.5,
   "description": "WGS84 longitude inside the published European coverage."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/halowerk-nordic-land-finland-tree-cover-share-7c030a1f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from nordland.halowerk.com](https://www.zero.xyz/host/nordland.halowerk.com/llms.txt)